.app {
    height: 100vh;
    width: 100vw;
    display: flex;
    flex-direction: column;
}

.top {
    flex: 0;
    border-bottom: solid 1px var(--adm-color-border);
}

.body {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

.bottom {
    height: 50px;
    border-top: solid 1px var(--adm-color-border);
}